228312637 has 12 divisors (see below), whose sum is σ = 262483936. Its totient is φ = 194536440.

The previous prime is 228312611. The next prime is 228312647. The reversal of 228312637 is 736213822.

It is not a de Polignac number, because 228312637 - 2⁷ = 228312509 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228312647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399562 + ... + 400132.

Almost surely, 2^228312637 is an apocalyptic number.

It is an amenable number.

228312637 is a deficient number, since it is larger than the sum of its proper divisors (34171299).

228312637 is an frugal number, since it uses more digits than its factorization.

228312637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 817 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 228312637 is about 15110.0177696785. The cubic root of 228312637 is about 611.1905772058.

The spelling of 228312637 in words is "two hundred twenty-eight million, three hundred twelve thousand, six hundred thirty-seven".